Non-refillable bottle cap



Oct. 4, 1960 M. s. KozLlK 2,954,889

NoN-REFILLABLE BOTTLE CAP Filed Jan. 16, 1959 2,954,889 NoN-REFILLABLE nor'rL-E CAP MilanS. Kozlk, Chicago, Ill., assignor of one-half to `iacob J. `Cohz, Chicago, Ill.

Fired Jn. 16, 1959, ser. No. 187,223

`17 claims. (cl. ers-21)' This invention relates generally to non-refillable bottles and more particularly, to improvements in a cap or closure device adapted to be permanently secured to the top of a bottle primarily for fluids for rendering same non-rellable. v

Heretofore, cap or closure devices of the general character herein concerned have been characterizedr by structural features which have rendered their use unsatisfactory for many reasons. Such prior devices have been capable of being tampered with such as by their secret removal from the bottle, thereby permitting adulteration of the contents of said bottle, or by ingenious use of syringe type or other thin, pointed instruments to puncture portions thereof suiciently to'permit their refillingv without detection. These devices also have necessitated complicated and expensive means for locking same on the bottle top in order to prevent ,their secret removal. In other instances, their structure has beenunduly complicated thereby increasing the manufacturing cost sutiiciently to discourage more universal use thereof. Also, where adhesive was employed for securing the closure to the bottle, contamination resulting from contact of the liquid contents with such adhesive was possible. Further, such prior art devices contemplated various modification of the interior contours of the bottle-neck for suitably accommodating the closure structure thereby rendering initial filling of the bottle more diicult and interfering with dispensing of the uid. Finally, such previous bottle closures did not provide for dispensing of'liquid in a smooth and steady stream by reason of their structure intended to render the bottle non-refillable to more or less degree.

Accordingly, it is the principal object of the invention to provide a bottle cap or closure of the character described which substantially eliminates the disadvantages hereinabove enumerated.

An important object of the invention is to provide a novel bottle cap of the character described adapted to be secured to the top of a bottle which is comprised of a pair of telescopically assembled members having cooperating locking means for preventing removal of the cap after securement thereof to the bottle and without utilizing any adhesive or other fastening means.

Another important object of the invention is to provide a novel bottle cap or closure of the character described in which one of said telescopic members has internal chambers having valve means at the bottom ends thereof, said valve means including valve seats and ball Valve means movable for covering and uncovering said valve seats, said internal chambers being interconnected by an air conduit which in cooperation with said valve means prevent reiilling of the bottle.

Another object of the invention is to provide a closure as described which is capable of preventing refilling of said bottle regardless of the position to which said bottle is tilted or inverted or forces, such as vibrations, to which it may be subjected.

Another object of the invention is to provide a bottle closure of the character described in which all of the operating parts thereof are disposed exterior of the neck of the bottle. Y

Other objects of the invention may be seen to reside in the provision of a bottle cap of the character described which is simple and easy to install,.which is relatively economical to manufacture and install, which is sturdy and efficient and yet which lprovides for a greater degree of protection against unlicensed refilling without detection than has heretofore been possible; and which enables the liquid contents to be dispensed in a uniform stream.

The foregoing and other objects of the invention will become apparent from the ensuing description in which a preferred embodiment is described in detail and illustrated in the accompanying drawing. It is contemplated that minor variations in size, arrangement, construction and proportions of the several parts m-ay occur to the skilled artisan without sacrificing any of the advantages or departing from the broad principles of the invention.

In the drawing:

Fig. 1 is a fragmentary sectional view taken vertically through a bottle having the novel cap or closure device embodying the invention installed thereon.

tFig. 2 is a View similar to that of Fig. 1, however, showing the bottle tipped for dispensing the contents of said bottle.

Fig. 3 is a sectional view taken through the device along the line 3 3 of Fig. l land in the direction indicated.

Fig. 4 is an exploded elevational View of the. closure device embodying the invention as applied to a bottle.

Fig. 5 is a fragmentary sectional View ta'ken through the air inlet chamber and showing a modified form of Y the invention in which additional safety valve means are provided.

Referring now to the drawing, the bottle closure or cap embodying the invention for achieving a non-rellable bottle is designated generally by the reference character 20. Same is adapted to be operably installed on the dispensing neck of a bottle, a portion of the neck Y being shown at 21, the bottle being formed of any suitable material, such as a glass, plastic or the like. The cap 20 is comprised of a pair of telescopically assembled members 22 and 23 of which member 22 is the outer member of the pair. The neck of the bottle is formed at its extremity with a pair of externally threaded hollow formations 24 and 25 in stepdown relationship one relative the other which cooperate with the members 22 and 23 for installing the cap 20 on the bottle and achieving the advantages of the invention. As seen in Fig. 4, formations 24 and 25 are coaxial with the smaller diameter formation 25 extending outwardly from the end face of the larger diameterrformation 24. Formations 24 and 25 preferably are integral with neck 21 and formed at the same time as is the bottle.

Member 22 comprises a hollow, cylindrical body or sleeve preferably molded of a suitable synthetic resin, such as acrylic, urea, phenolic resins or same may be formed of metal or glass. Member 22 is open at both ends, the upper end thereof having an annular seat or rabbet 26 for accommodating a disc or plate 27 for closing otf said upper end after the inner member 23 has been telescopically engaged therein. Secured on the annular wall 2,8 of member 22 is a spout 29 communicating with the interior of the member 22 through inlet 30 and having a dispensing opening at its outer end. Secured on the interior of the spout 29, which may comprise a short length of rigid tubing, is a helical strip 31 of suitable material placed to prevent insertion of a pointed instrument into the spout and into the interior of the member 22 through inlet 30, but without interrented oet. a, ieee fering with the proper ow of liquid from the bottle.

. The helical strip 31 may be" replaced by other means as Well to serve as a deterrent against such manner of tampering. Diametrically opposite the inlet 30, annular wall 28 is provided with an air inlet 32 thereinto.

Member 22 has a depending annular skirt 34 which is internally threaded and of suitable diameter for being screwed upon the larger diameter formation 24 of the neck. Skirt 34 may -be integral with the member 22 as shown or may be a separate part subsequently secured thereto. The length of skirt 34 is substantially equal to the length of formation 24 and is provided with unidirectional locking means for preventing axial separation of the members 22 and 23 in their coupled assembly on the bottle. Said means may comprise an annular abutment or ring 36 on the interior of the member 22 or other inwardly extending protrusions arranged to e11- gage the inner member 23 in this function, as subsequent- 1y to 'be explained. As seen in Fig. l, the ring 36 will engage upon the annular shoulder 37 connecting the formations 24 and 25 when member 22 is installed. For purposes of description, the member 22 may be seen to have an internal cavity 38 (Fig. 3) above thering 36 and communicating with the interior of the skirt 134.

Considering now inner member 23, same also preferably is molded from the samematerial as member 22. Member 23 includes anannular skirt 40 the inner surfaces of which are threaded for screwing the skirt 40 on the formation 25. The threads on the skirt 40 and formation 25 are opposite in direction to those on the skirt 34 and formation 24. The outer diameter of the skirt `4U* is selected to permit insertion thereof into member 22 through the upper end thereof to be disposed in cavity 38. The upper end of skirt 40` has a transverse wall 4l thereacross and the length of skirt 40 is substan` tially identical to the axial length of formation 25. Supported vertically upstanding on the transverse wall 41 is a pair of hollow, cylindrical bodies 42 and 44 which cooperate to form cavity 38 into a predetermined compartmentalized or chambered structure when members 22 and 23 are assembled together.

As seen in Fig. l, member 23 is disposed on the interior of member 22 and with skirt `40 screwed down on the formation 25, transverse wall 41 engages -upon the end face of the formation 25. Since the cooperating threads of the skirt 34 and formation 24 and skirt 40 and formation 25 respectively are not matched, that is, right and left handed respectively or vice versa, it is impossible to separate the members 22 and 23 axially by rotating member 22 relative member 23 since the locking means or ring 36 will bear against the bottom end face 45 ofthe skirt 40 and prevent continued rotation of the member 22. Thus, no adhesive or mechanical fastening means are required to maintain installation of cap 20 on the bottle after the members 22 and 23 have been screwed down on the formations 24 and 25 respectively and disc 27 screwed in place.

The manner in which cavity 38 is compartmentalized by means of the inner member 23 will now be described. Cylindrical bodies 42 and -44 are rigidly supported vertically and arranged side by side on the transverse wall 41. As seen in Pig. 3, cylindrical body 42 is'substantially larger in outside diameter than body 44, their combined outside diameters being slightly less than the inside ldiameter of cavity 38 so that their exterior circumferential interfering with rotation of skirt 40 for screwing same down on formation 25. The bodies 42 and 44 may be secured together along their juxtaposed surfaces byV suitable welding or adhesive for additional rigidity although their attachment on wall 41 mayy not require this. The lengths of the bodies 42 and 44 are selectedso that their upper extremities are ilush and disposed not; to interfere with'seating of the disc 2.7.

The-cylindrical body `42l which shall be referred to as 4 the outlet body is comprised of an outer annular wall 50 and an inner annulary wall 52 concentric with and spaced from the wall 50 to` provide an outer chamber 53 and an inner chamber 54.V The chambers 53 and surfaces engage the innner surface of cavity 38 without 5x4, are, in the embodiment described herein, closed at their upper ends by the transverse wall 55. However, chambers 53 and 54 may havetheir upper ends open and iiush against the closure 27 when said closure is inserted in place during nal assembly of the cap 20 soy thatA the openings are closed by closure 29. The bottom end of the outer chamber 53 is closed by end wall 56. The inner annular wall 52 isengaged through the transverse wall 55 .and transverse wall 41 so that the inner chamber 54 connects with the interior of formation 25 through opening 57. The bottom end of annular wall 52 is thickened on the interior thereof to provide an annular valve seat 58 inwardly spaced from open end 57. Disposed in the chamber 54 is a ball valve 59 connect the outer chamber 53 with said spout 29. Wall 50 has a second passageway 61 adjacent the lower end thereof and on a side opposite that in which the passageway 60 is formed. The inner wall 52 has an opening 63 therethrough adjacent its upper end and spaced above passageway 60 which connects the two chambers 53 and 54 and a second opening 64 therethrough adjacent the lower end thereof which likewise connects the two chambers 53 and 54 thereat.

The cylindrical body 44 or inlet body likewise is formed into two cylindrical concentric chambers 65 and 66 by means of a pair of concentric annular walls 67 and 68, the outer wall 67 being larger in diameter than the wall 68 to provide the outer chamber 65. The upper end of chamber 66 is closed as indicated by the end wall 69, although said end may be open and thereafter closed by the installed capr27. The lower end of outer chamber 65 is closed by the end wall 7l. The inner wall 68 is engaged through the bottom wall 71 and transverse wall 41 and is'open at its bottom end 72. Depending from said end 72 is an open-ended tube 73 which communicated at one end thereof with the interior of formation 25, the opposite end 74 being inwardly spaced from end 72 to provide a valve seat thereat cooperating `with a ball` valve 75 on the interior of the chamber 66. The diameter of lball 75 is slightly less than the interior of the chamber 66 so as to be freely movable therein.

In the 4installed position of member 23, outer annular wall 67 has `a passageway 76 aligned with air inlet 32 thereby `connecting said inlet with the outer chamber 65. On an opposite-surface, wall 67 has` a passa-gewayv77 aligned with passageway 61 whereby outer chambers 65 and 53 of the respective cylindrical bodies are connected. The inner annular wall 68 has a pair of openings 78 and 79 respectively adjacent the upper and lower ends thereof connecting the chambers 65 and 66 of the inlet body 44.

The permanent assembly of cap 2.0 on a bottle neck is a relatively simple matter. Member 22 first is screwed on the formation 24 so that the ring 36 engages upon annular shoulder 37. The formation 25 extends through ring 36 into the cavity 38 and is spaced fnom the inner surface of annular wall 28. into the cavity 38 and skirt 40 is screwed down upon the formation 25 `in `an opposite direction, so that the bottom of skirt 40 'engages upon the ring 36. Closure rnem- Member 23 is then inserted f other suitable means. Once assembled, the members 22 and 23 cannot be separated axially, and the cap Z0 is thus permanently secured on the bottle.

When the fluid contents of the bottle are to be dispensed, the bottle is 'canted or tipped as shown in Fig. 2. The -ball valve 59` is moved away from valve seat 58 to be located at the top of chamber 54 in position to cover passageway 63. The liquid enters chamber 54 through opening 58, fills chamber 54 and then passes through passageway 64 into chamber 53, and out through the spout via inlet 30, At the same time the pressure on the surface of liquid in the bottle is maintained at 'atmospheric pressure |by reason of the ball 75 being displaced from seat 74 by the force of gravity and air permitted to enter through `inlet 32, chamber 65 and pass into chamber 66 through passageway 79l and thence into lthe bottle through tube 73.

The manner in which the invention is operative to frustrate 4attempts to refill a bottle equipped with the novel cap 20 will now be explained. Suppose such an attempt is made while the bottle is in upright position to introduce a foreign liquid under pressure through the air inlet 32, such as by means of a hypodermic syringe. The balls 59 'and 75 in chambers 54 and 74 respectively are seated on the valve seats to close ducts 58 and 72 leading to the interior of the bottle from chambers 54 and 66. Any 'fluid injected into chamber 65 through air inlet 32 cannot thereby pass into the interior of the bottle but would instead pass through passageway 61 into chamber 53 and out through spout 29 whereby no foreign fluid could be introduced into the interior of the bottle.

Any attempt to adulterate the contents of the bottle by introducing a foreign fluid through either the pouring end of spout 29 or the air inlet 32 must also be unsuccessful in any canted position of the bottle. If the bottle is inverted, fluid immediately lls the chambers of the device 20 to prevent such foreign fluid from entering; If the bottle is tipped to the position shown in Fig. 2 and fluid is introduced through the pouring end of the spout 29, the following situation obtains: although ball Valve may move to block passageway 63 and to some extent prevent such fluid from entering chamber 54, it will be apparent that the fluid entering chamber 54 through passageway 63 will force the ball valve 59 to seat upon valve seat 58 to close passageway 57 between chamber 54 and the interior of the bottle. Fluid contents from the bottle entering chamber will flow either out of the air inlet 32 or eventually return to the bottle via passageway 57 because of the interconnected relationship of the chambers of the cap 20.

If while the bottle is canted and the pouring end of spout 29 is closed, foreign fluid introduced through inlet 32 likewise will force the ball valve 75 back onto seat 74 to closethe tube 73. Such fluid will then pass eventually into chamber 54 land force the ball valve 59 to re- .turn into engagement upon Valve seat 58. Only insignificant quantities of foreign fluid, if any, can possibly enter the bottle by such tampering procedures.

It will be apparent that the spiral web 31 in spout 29 is an efficient deterrent against introduction of pointed instrument sufficiently deep to puncture the Walls of the internal chambers of the device 20. This is important also where hypoderm-ic needles are utilized by tamperers.

Referring to Fig. 5, modified valve means for preventing unauthorized tampering is illustrated, same being designated generally by reference character 80. The valve means 80 is associated with the inlet chamber structure 44. Instead of a straight tube 73, the tube 73 is formed with an enlarged bulb 82 at the bottom end thereof. The extension 82 has a pair oflateral passageways 83 and 84 in opposite `sides thereof and opens through passageway V85 in the bottom end thereof to the neck 21. The interior end of passageway 85 has a valve seat 86 surrounding same adapted to seat a ball valve 87 for closing said'passageway. The ball 87 is freely movable in extension 82 and will move to the dotted line position to close end 88 of tube 73 when the bottle is tilted. Thus uid from the 'bottle is prevented from entering tube 73 in the `first place. When ball 87 is seated on valve seat 86, escape of air is prevented through tube 73' thereby creating `a back pressure forcing all liquid out of the outlet chamber 42. When the bottle is tilted, valve 87 prevents liquid from flooding chamber 44. Also, alternate opening and closing of passageway 85 allows freer access of `air to the bottle and improved ilow characteristics of the fluid from spout 29.

Additional ball valves may be provided in chambers 54 and `66 to insure proper operating of the device in the event lball valves 59 and 75 are temporarily inoperative.

It is also contemplated that the inner telescopic member 23 may have an upward annular'wall extension (not shown) and the tubes forming chambers 42 and 44 disposed within said annular wall. This forms member 23 somewhat `like a shell and enables the entire inner section of the cap member to be molded in a one-piece unitary structure, if desired, thereby reducing manufacturing costs to a considerable extent.

Another optional feature which may be included to insure a smooth flowing stream of fluid as well as decrease chance of tampering may be the provision of a perforate disc just below the opening 78 in the chamber 66. This disc would allow the passage of air through said passageway 78 for purposes of forcing ball valve 75 onto its valve seat when the container is returned to its upright position, but allowing also a faster fiuid flow rate when said container is tilted.

It is believed that this invention, its mode of constructionand assembly, and many of its advantages should be readily understood from the foregoing without further description, and it should also be understood that while a preferred embodiment of the invention has been shown and described for illustrative purposes, the specific details are nevertheless capable of wide variation Within the purview of this invention as defined in the appended claims.

What is claimed and desired to be secured by Letters Patent of the United States is:

l, In combination, a container having a dispensing neck, a cap device secured on -top of said neck for rendering the container non-refillable and including a pair of telescopically assembled members cooperating to define at least a pair of interconnected chambers on the interior of the cap, a dispensing outlet connecting with one of said chambers for withdrawing uid from the container, an air inlet connected with the other of said chambers, each of said chambers communicating with the interior of said container, and valve means in each of said chambers operable to permit dispensing of said fluid through the dispensing outlet when the container is tilted, said' valve means further operable to prevent fluid lfrom being introduced into the container from either said dispensing outlet or air inlet in any position of the container.

2. In a non-refillable bottle having a dispensing neck, a closure device adapted to be secured on top of said neck for rendering said bottle non-refillable comprising, a pair of members assembled one within the other, the outer member comprising a cylindrical sleeve open at opposite ends thereof, the second member adapted to be inserted through one end said first member `and having means for dividing the interior of the `first member into a compartmentized structure including at least a pair interconnected chambers, one of said chambers having an a-ir inlet and the second chamber having a dispensing outlet, each chamber communicating with the interior of the bottle and having rele'asable valve means operable to permit dispensing ofuid from the bottle through said outlet and to prevent introduction into the bottle of uid either through said inlet or outlet, and means closing said open end with the members so assembled.

3. In a container for fluids having a body portion and adispensing neck, a cap structure permanently secured to said dispensing neck, said cap structure rendering Vsaid container nondreiillable, said cap structure comprismg -two telescopically assembled members, one said member comprising an outer cylindrical sleeve, said outer sleeve member having outlet means attached through the annular Wall thereof, said sleeve member having 4also a downwardly depending annular skirt, said skirt having internal threads thereupon, an inner cylindrical sleeve` member telesccpically engageable in said outer member, said inner sleeve member having interconnecting chambers disposed therein, a downwardly depending skirt member integral therewith, said skirt having internal annular threads thereupon,A said threads having a direction opposite that of the skirt depending from the outer member, both skirt formations being engageable with matching threaded formations on the dispensing neck of thecontainer so as to form a permanent seal thereto when assembled, a cap member seated in a rabbet formation closing off the top of said assembled sleeve members, said interconnecting chambers each comprising two concentrically disposed vertically arranged tube members forming an outer subchamber and an innersub-chamber, said outer sub-chamber communicating with the exteriorof saidcap structure and the other chamber, said inner sub-chamber commnnieating with the interior of the container and the said outer sub-chamber, said communicating means being passageways through the annularwalls of said chambers, valve means disposed Ywithin said inner sub-chambers at the bottom end thereof, said valve means comprising a valve seat, and a ball member, said ball member adapted to freely move within said inner sub-chamber when said container is tilted so as to -permit removal of the contents of said container, and is further adapted to be tightly received in said valve seat lwhen they container is returned to its normal substantially upright position closing said valve'thus preventing reintroduction of any fluid into said container, one of said interconnecting chambers being of substantially greater diameter than the other and serving as the fluid outlet chamber, said fluid outlet chamber communicating with the exterior of the cap by means of the outlet means, said smaller diameter chamber form-k ing the air inlet chamber, and said air inlet chamber cornmunicating with the exterior of said cap by means of an air inlet passageway formed in the annular wall of the outer sleeve member and disposed opposite the outlet means, said air inlet chamber having a downwardly depending tube disposed in the inner chamber thereof, said valve means located at'the top of said tube.

4, A structure as described in claim 3 in which the downwardly depending tube disposed in the air inlet inner sub-chamber has an enlarged section integral `therewith, said enlarged section housing safety valve means.

5. A structure as described in claim 3 in which there are radditional ball members within said inner sub-chambers adapted to prevent sticking of said valve means.

6. A structure as described in claim 3 in which said f outlet means is provided with an internal guard means preventing insertion of a foreign object into the internal chambers of said cap without interfering with the dispensing of the contentsy of said container.

7. In combination, `a container having a dispensing neck, a cap device secured on top of said neck for rendering the container non-reiillable and including a pair of telescopically assembled members cooperating to define at least a pair of interconnected chambers on the interior of the cap, a dispensing outlet connecting with one of said chambers for withdrawing iiuid from the container, an air inlet connected with the other of said chambers, each of said chambers communicating with the interior of said container,V and valve means in each of said chambers operable to permit dispensing of'said iluid thnough the dispensing outlet when the container is tilted, said valve means further operable to prevent fluid from being introduced'into 'the Acontainer` from either Said dispensingA outlet or air inlet in any position of the container, said telescopic members and neckV having cooperative screw thread means for permanently securing the cap on the container'.

/ 8. `In combination, a container having a dispensing neck, a cap `device securedon top of said neck for rendering the 'container non-reiillable andincluding a pair of telescopically assembled members cooperating to define at least a pair of interconnected chambers on the interior of the cap, a dispensing outlet connecting with one of said chambers for withdrawing iiuid from `the container, an Iair inlet connected with the other of said chambers, each of said chambers communicating with the interior of said container, and valve means in each of said chambers operable to permit dispensing of said iiuid through the dispensing outlet when the container is tilted, said valve meansr further operable to prevent iiuid from being introduced into the container from either said dispensing outlet or air inlet in any position of the container, each of said interconnected chambers include at least two interconnected sub-chambers.

9. In combination, a container having a dispensing neck, a cap device secured on top of said neck for rendering the container non-reiillable and including a pair of telescopically assembled members cooperating to define at least Va pair of interconnected chambers on the interior of the cap, a dispensing outlet connecting with one of said chambers for withdrawing fluid from the container, an air inlet connected with the other of said chambers, each of said chambers communicating with, the interior of said k container, and valve means in each of said chambers operable to permit dispensing of said fluid through the dispensing outlet when the container is tilted, said valve means further operable to prevent fluid from being introduced into the container from either said dispensing outlet or air inlet in any position of the container, each of said interconnected chambers is divided into a pair of concentrically disposed 'sub-chambers, the outer subchamber of each pair communicating with the exterior of said cap, the inner sub-chamber of each pair communicating with the interior of said container and having the valve means disposed therein.

l0. In combination, a container having a dispensing neck, a cap device secured on top of said neck` for rendering thc container nondrellable and including a pair lof telescopically assembled members cooperating to define at least a pair of .interconnected chambers on the interior of the cap, a dispensing outlet connecting with one of said chambers for withdrawing fluid from the container, an air inlet connected with the other of said charnbers, each of said chambers communicating with the interior of said container, and valve means in each of said chambers operable to permit dispensing of said fluid through the dispensing outlet when the container is tilted, said Valve means further operable to prevent liuid from being introduced into the container from either said dispensing outlet or air inlet in any position lof the container, each of said interconnected chambers is divided into a pair of concentrically disposed sub-chambers, the outer subchamber of each pair communicating with the exterior of said cap, the inner sub-chamber ofeach pair communicating with the interior of said container and having the valve means disposed therein, said valve means each comprising a ball member freely movable lin the inner sub-chamber and 'a valve seat for the ball formed in said sub-chamber.

l1. The combination as described in claim 7 in which said outer and inner telescopic members have said threads on interior surfaces thereof, said neck having a pair of externally threaded coaxial formations for respectively engaging with the threads of said members, the threads on said formations and members being selected so that each member is screwed on its associated formation ina directionopposite that required for the second member.

,12. The combination as described in claim 7 wherein each of said interconnected chambers comprise a pair of concentrically arranged tube members, each pair of tube members disposed to define an inner sub-chamber and an ou-ter sub-chamber, said outer sub-chambers each communicating with the exterior of said cap structure, said said valve means comprise a valve seat, and a ball member adapted to move freely within each inner sub-chamber when said container is tilted, but to be received tightly on said valve seat when the container is substantially upright, said -ball member being movable in the interior of said inner sub-chamber so as to cover the upper communicating passageway between t-he inner sub-chamber and the outer sub-chamber.

14. In a non-.reiill-able bottle having a dispensing neck, a closure device adapted to be secured on top of said neck for rendering said bottle non-reiillable comprising, a pair of mem-bers assembled one within the other, the outer member comprising la cylindrical sleeve open at opposite ends thereof, the second member adapted to be inserted through one end said iirst member and having means for dividing the interior of the iirst member into a compart-mentized structure including at least a pair interconnected chambers, one of said chambers having an air inlet and the second chamber having a dispensing outlet, each chamber communicating with the interior of the bottle and having releasable valve means operable to permit dispensing of fluid from the bottle through said outlet and to prevent introduction into the bottle of fluid either through said inlet or outlet, and means closing said open end with the members so assembled, said memb\ers having unidirectional locking means for preventing axial separa- 10 tion thereof upon rotation of the members one relative the other.

15. A closure device as described in claim 14 wherein said locking means comprise protruding abutments on the interior surface of said outer member enga geable with said inner member.

16. In a non-reiillable bottle having a dispensing neck, a closure device adapted to be secured on top of said neck for rendering said bottle non-reiillable comprising, a pair of members assembled one within the other, the outer member comprising la cylindrical sleeve open at opposite ends thereof, the second member adapted to be inserted through one end said lirst member and having means -for dividing the interior of the first member into a compartmentzed structure including -at least a pair interconnected chambers, one of said chambers having an air inlet and the second chamber having a dispensing outlet, each chamber communicating with the interior of the bottle and having releasable valve means operable to permit Idispensing of uid Ifrom the bottle through said outlet and to prevent introduction into the bottle of uid either through said inlet or outlet, and means closing said open Y end with the members so assembled, said inner member having a pair of upstanding tubular for-mations forming :said structure, each tubular formation including a pair of concentric annular walls forming Ia pair of sub-chambers, said sub-chambers being interconnected and the inner one of the sub-chambers having said valve means therein.

17. A closure device as described in claim 16 wherein means are provided for so installing said closure comprising lsaid neck and members having cooperating screw threads on the exterior and interior thereof respectively, the outer member required to be rotated for installing same in a direction opposite that required for the inner member.

References Cited inthe le of this patent UNITED STATES PATENTS 2,835,411 Scheminger May 20, 1958 

